Coupling for electric cables.



No. 868, 160. PATENLEDUGT. 15, 1907. G. L'HOEST& H. PIEPER. GOUPLING FOR ELECTBIC GABLES.

AP PLIOATIOX PILED AUG.10,1905.

Ji&

breakable coupling part being omitted.

GUSTAVEL'HOEST, OBBUSSELS, AND HENRI PIEPER, 'OF LIEGE,VBELGIUM.

COUPLING FOR ELECTRIC CABLEB.

No. eee,4eo.

Speciflcation of Letters Patent.

ramm Oct. 15, 1907;`

Application filed August 10, '1905. Serial Ne. ?78,692.

To al l whom it may concem:

Be it known that we, Gus'rsvn L'Horzs'' and HENRI Pnra, subjects of the King of Belgium, and residing, respectively, at 74 Rue Malibran, Brussels, and 18 Rue des Boyards, Liege, Belgium, have jointly invented certain new and useful Improvements in Couplings ior Electric Conductors, of which the following is a specificatim e Our invention relates to couplings for electric conductors, and has for its object to provide means whereby such conductors can be coupled and remain coupled under ordinary stmins, but when subjected tt extraordinary strains, less than that which would injure the conductor, the coupling will be broken.

To these ends our invention consists of a coupler em bodying a construction and having the general arrangement of parte and breakable under the conditions substantially as hereinafter more particularly setorth.

In the acoompanying drawing wherein we have illustrated a preferred embodim ent of the invention,--Figure 1 is a longitudinal section of the coupling; and Figs. 2 and 3 show the electrical coupling pieces attached to the ende of the conductor, the mechanical or As above intimated, the object of our invention is to provide an electric coupling for co'nductos whid will be operative under ordinary straim but which, under extmordinary strains, wilLbreak and break before the strains are of such a character as to injure theoonductor. We hsve shown an embodiment wherein a andb rep resent the two adjacent'ends ot an insulated'oonductor to which ends are respectively secured the coupling pieces c, d, which may be of any duired character, they being shown in the form ot tubes secured to the ends ot the conductor, the reduced end of .one tube fit,

tinginasocket intheother. Theseendsareshown as slitted as at s, r respectively so es tomake s iriction connection between the two parts. When these two parts`are ooupled the ooutinuity ot the electric circuit In order to impart to this coupling theiamount of retecting sheath g, which is preferably made of insulating v material, and which envelops the adjacent ende of the coupler and preferably extends beyond the same over a portion of the insulated cover-ing of the conductor; and it is secured in place by any suitable means, esthe bindings I. With this Construction, the terminals of the conductor are normally held together under ordinary conditions by the coupling pieces c, d, supplemented .by the protecting sheath, but when the conductor is subjected to a predeta'mined strain, which is less than that'which would injure the conductor, the

mechanical coupling or protecting shesth will be disrupted and the couplings' allowed to separate and the cable be protected. It will thus be seen that under ordinary conditions there is complete electric oonnection between the ende of the-conductor, but that under extrbrdinary strains the ends of the conductor will b'e i separated before the conductor itself is iniured.

What we claim is,- I

A sepsrable coupling !or electric conductor, eomprising detschble slectrieal coupling part: sepsrsbleunder a longltudlnl strsln; and -a protectlng' shesth tor said psrts breskabe under a predeternined strsln greater than that required to' separate the electriul coupling puts and incloslng the electrical coupling parts.

In testlmony whereo! -we have signed our name to this specmcation in the presence ot two snhsrlblng witnesses. GUBTAVE L'HOEBT.

4 HENRI PIDPER.

Wltnes: 

